CDL GENERAL KNOWLEDGE TEST (SC) - PRACTICE TEST
31.
To maintain alertness while driving, you should:
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avoid short breaks and keep the window open.
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rely on caffeine.
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take periodic breaks.
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keep cool by opening the window while eating heavy foods.
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32.
When driving, you should:
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use your mirrors only when changing lanes.
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avoid using your mirrors to spot overtaking vehicles.
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avoid checking your mirros often.
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check your mirrors regularly.
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33.
If you must drive slowly, how should you alert following drivers?
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Turn on your taillights
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Use your emergency flashers if it is legal
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Help them out by signaling when it is safe to pass
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Flash your brake lights
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34.
Which of the following statements about using turn signals is true?
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To turn safely you must keep one hand on the wheel.
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You should use your turn signals when your vehicle is parked at the side of the road.
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To keep others from trying to pass you, you should signal just before you turn.
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None of the above.
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35.
Glad hands are:
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coupling devices.
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electronic devices.
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warning devices.
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securement devices.
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36.
Which of the following statements about drinking alcohol is true?
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Only time will sober you up.
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Alcohol first affects judgment and self-control, which are necessary for safe driving.
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The BAC measures the amount of alcohol in your body.
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All of the above.
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37.
When going down long, steep downgrades, you should:
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downshifting and then use the brakes.
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try not to use the brakes.
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rely solely on engine braking to reduce your speed.
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only use the brakes.
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38.
Regrooved tires:
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cannot be used on the front wheels of buses.
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cannot be used on the rear wheels of buses.
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cannot be used on the wheels of buses.
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None of the above.
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39.
Front-end header boards:
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should never be used.
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reduce traction.
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protect drivers from cargo in case of an accident or emergency stop.
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protect drivers from spilled cargo.
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40.
When driving through a large puddle or flowing water, you should:
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gently put on the brakes.
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slow down.
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increase engine rpm.
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All of the above.
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